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A new type of shearer guide sliding shoe bottoming welding wire and using method thereof

A technology of guiding slipper and bottom welding, which is applied in welding equipment, welding medium, welding equipment, etc., can solve the problems of high operating intensity, low welding efficiency, heavy workload, etc., and achieve good work hardening performance and forming effect Good, little smoke effect

Active Publication Date: 2021-11-23
XIAN COAL MINING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The advantage of XHD646 welding rod is that it has good crack resistance and impact resistance, and has good work hardening ability. Its disadvantages are low welding efficiency, heavy workload, and high operating intensity of workers.

Method used

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  • A new type of shearer guide sliding shoe bottoming welding wire and using method thereof
  • A new type of shearer guide sliding shoe bottoming welding wire and using method thereof
  • A new type of shearer guide sliding shoe bottoming welding wire and using method thereof

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Experimental program
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Effect test

Embodiment 1

[0029] The new coal shearer guide slipper bottoming welding wire of this embodiment is composed of the following components in mass percentage: C0.05%, Cr 15.5%, Ni 9.5%, Mn 6.5%, Mo 2.9%, Cu 1.8%, S 0.015% , B 0.33%, V0.02%, Nb 0.2%, and the balance is Fe.

[0030] After testing, the tensile strength of the bottom welding wire in this embodiment is 670MPa, the yield strength is 465MPa, the elongation is 40%, the post-weld hardness is 165HV, and the work hardening strength is 410HV.

[0031] The specific process of the use method of the new type of shearer guide slipper welding wire in this embodiment is as follows: the welding wire is used for manual gas shielded surfacing welding. When the thickness of the surfacing layer is greater than 4mm, multi-layer multi-pass welding is adopted, and the width of a single weld bead is 3mm to 4mm. During the welding process, reciprocating surfacing welding or unidirectional multiple surfacing welding along the direction of the weld bead...

Embodiment 2

[0034] The new coal shearer guide slipper bottoming welding wire of this embodiment is composed of the following components in mass percentage: C0.05%, Cr 15.5%, Ni 9.5%, Mn 6.5%, Mo 2.9%, Cu 1.8%, S 0.015% , B 0.33%, V0.02%, Nb 0.2%, and the balance is Fe.

[0035] After testing, the tensile strength of the bottom welding wire in this embodiment is 670MPa, the yield strength is 465MPa, the elongation is 40%, the post-weld hardness is 165HV, and the work hardening strength is 400HV.

[0036] The specific process of the use method of the new type of shearer guide slipper welding wire in this embodiment is as follows: the welding wire is used for manual gas shielded surfacing welding. When the thickness of the surfacing layer is greater than 4mm, multi-layer multi-pass welding is adopted, and the width of a single weld bead is 3mm to 4mm. During the welding process, reciprocating surfacing welding or unidirectional multiple surfacing welding along the direction of the weld bead...

Embodiment 3

[0039] The new coal shearer guide slipper bottoming welding wire of this embodiment is composed of the following components in mass percentage: C0.05%, Cr 15.5%, Ni 9.5%, Mn 6.5%, Mo 2.9%, Cu 1.8%, S 0.015% , B 0.33%, V0.02%, Nb 0.2%, and the balance is Fe.

[0040] After testing, the tensile strength of the bottom welding wire in this embodiment is 672MPa, the yield strength is 455MPa, the elongation is 38%, the post-weld hardness is 170HV, and the work hardening strength is 400HV.

[0041] The specific process of the use method of the new shearer guide slipper bottom welding wire in this embodiment is as follows: the bottom welding wire is used for the automatic welding of the welding machine. When the thickness of the surfacing layer is greater than 4mm, multi-layer multi-pass welding is adopted, and the width of a single weld bead is 3mm to 4mm. During the welding process, reciprocating surfacing welding along the direction of the weld bead or unidirectional multiple surf...

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Abstract

The invention discloses a new type of welding wire for guiding sliding shoes of a coal mining machine, which is composed of the following components in mass percentage: C not exceeding 0.07%, Cr 14.0%-18.0%, Ni 7.5%-9.8%, Mn 5.5%-6.5% %, Mo is less than 3.0%, Cu is less than 2.0%, S or P is less than 0.02%, B is less than 0.5%, V is less than 0.03%, Nb is less than 0.3%, and the balance is Fe; the invention also discloses the use of the bottom welding wire The method is used for manual gas shielded surfacing welding or automatic welding of special welding machines. Adding Cr to the bottom welding wire of the present invention improves strength and hardness, adding Ni and reducing carbon content improves toughness and plasticity, adding Mn improves wear resistance and adding Mo, B and V enhances crack resistance and impact resistance. The bottom welding wire of the invention has high welding efficiency, reduces work difficulty and strength, and is suitable for popularization.

Description

technical field [0001] The invention belongs to the technical field of welding wires, and in particular relates to a new type of welding wire for guiding sliding shoes of a shearer and a use method thereof. Background technique [0002] The shearer is an indispensable machine in the fully mechanized mining face of the coal mine industry. As the load-bearing part of the shearer, the guide shoe is required to have high strength and wear resistance. At present, the wear resistance treatment of guide shoes is mainly based on the direct surfacing of wear-resistant layers on the guide surface. At present, the commonly used guide shoe material of shearer is ZG35CrMoV, and its chemical composition and mass content are shown in Table 1 below. [0003] Table 1 Composition and mass content of ZG35CrMoV [0004] [0005] Calculated according to the carbon equivalent calculation formula recommended by the International Institute of Welding (IIW): The carbon equivalent of ZG35CrMoV i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30B23K35/12B23K9/04
CPCB23K9/04B23K35/0261B23K35/3053
Inventor 史仁贵薛强王先龙谢杰郭满忠苏晓静王晟东邓娟
Owner XIAN COAL MINING MACHINERY